<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="信息描述">
        <el-tag type="info">excel模版说明</el-tag>
        <el-tag>
        <i class="el-icon-download"/>
        <a :href="'/static/project.xlsx'">点击下载模版</a>
        </el-tag>
      </el-form-item>
      <el-form-item label="选择Excel">
        <el-upload
            ref="upload"
            :auto-upload="false"
            :on-success="fileUploadSuccess"
            :on-error="fileUploadError"
            :disabled="importBtnDisabled"
            :limit="1"
            :action="BASE_API+'/eduservice/subject/addSubject'"
            name="file"
            accept="application/vnd.ms-excel">
            <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
            <el-button
                :loading="loading"
                style="margin-left: 10px;"
                size="small"
                type="success"
                @click="submitUpload">{{ fileUploadBtnText }}</el-button>
        </el-upload>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default{
  data(){
    return{
      BASE_API: process.env.BASE_API, // 接口API地址
      //OSS_PATH: process.env.OSS_PATH, // 阿里云OSS地址
      fileUploadBtnText: '上传到服务器', // 按钮文字
      importBtnDisabled: false, // 按钮是否禁用,
      loading: false
    }
  },
  created(){

  },
  methods:{
    //点击按钮上传文件到接口里面
    submitUpload(){
      this.fileUploadBtnText = '正在上传';
      this.importBtnDisabled = true;
      this.loading = true;
      this.$refs.upload.submit();
    },
    //上传成功后
    fileUploadSuccess(){
      //提示信息
      this.loading = false;
      this.$message({
        type: 'success',
        message: '添加课程分类成功'
      });
      //跳转课程分类列表
      this.$router.push({path: '/subject/list'});
    },
    //上传失败后
    fileUploadError(){
      //提示信息
      this.loading = false;
      this.$message({
        type: 'error',
        message: '添加课程分类失败'
      });
    }
  }
}
</script>

<style>
</style>
